Update app.py

app.py

@@ -6,7 +6,7 @@ import base64
 
 from dotenv import load_dotenv
 from typing import TypedDict, Annotated
-from langchain_core.messages import AnyMessage, SystemMessage
+from langchain_core.messages import AnyMessage, SystemMessage, HumanMessage
 from langchain_community.tools import DuckDuckGoSearchRun
 from langchain_ollama.chat_models import ChatOllama
 from langchain.tools import Tool
@@ -149,7 +149,8 @@ class BasicAgent:
 
     def __call__(self, question: str) -> str:
         print(f"Agent received question (first 50 chars): {question[:50]}...")
-        answer = alfred.invoke({"messages": [system_prompt, question]},{"recursion_limit": 3})['messages'][-1].content
+        message = HumanMessage(content=question)
+        answer = alfred.invoke(input={"messages": [system_prompt, message]},config={"recursion_limit": 3})['messages'][-1].content
         answer = "".join(re.findall(r'(FINAL ANSWER:.*)', answer, flags=re.M))    
         answer = answer.replace('FINAL ANSWER: ', '')
         answer = answer.replace('[', '')